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junior college 2 | H2 Maths
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Date Posted: 4 years ago
Views: 290
For this pnc, u can start by doing one row’s permutation at a time. For (i), its just permutation without restrictions. For (ii), theres 2 cases: when YBB in the 3rd or 4th row. For (iii), theres 2 ways to go abt it: either elimination or the normal way. So u can do either 0,1 or 2 yellows in the 4th row / OR (i) answer minus 3 yellows —easier to do
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For (i)
Date Posted:
4 years ago
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